v.23.1Improvement

Don't Greedily Parse UUIDs Beyond Quotes to Avoid Errors

Official CH changelog text
Don't greedily parse beyond the quotes when reading UUIDs - it may lead to mistakenly successful parsing of incorrect data. #44686 (Raúl Marín).
Improved UUID parsing by preventing greedy parsing beyond quotes to avoid incorrect data interpretation.

Why it matters

The update addresses an issue where UUIDs were parsed greedily beyond quotation marks, which could lead to incorrect data being mistakenly accepted as valid UUIDs. This enhancement improves data accuracy and parsing reliability when reading UUID values.

How to use it

This fix is applied internally in the UUID parsing logic. Users do not need to perform any manual configuration; it is automatically effective after updating to the new ClickHouse version that includes this fix.

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